Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e41f3148072f75…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 02:01:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0a5e1c2a5e13cf152195c271e0506c54 SHA-1: 7a8ac00adcae1c153d72d3d475df26377fb2434e SHA-256: a2e41f3148072f75b7fd59af1c4710d6fb3f319e0112384a477dedc239b8e269
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at http://netcdn.tw/app/431946152/how-to-hack-roblox-to-get-free-robux-game-hack, which is flagged as malicious. The presence of these links and the lure suggest an attempt to redirect users to potentially harmful websites for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/how-to-hack-roblox-to-get-free-robux-game-hack In PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-pants-templates_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-bypass-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-robux-hack-2021-lenovo_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/best-roblox-hack-jailbeak_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-coins_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/hacks-como-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-games-for-kids-roblox_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/speed-hack-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EB 22888 bytes
SHA-256: 63e5a8404e594c1ecde5fce504f401631b4b7210a951c05de52cc4d565bb8832
font_01_sfnt_off0000652b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652B 19228 bytes
SHA-256: bcb228600d1876164d47ff19adbc225d1b3379d908d021e666a2e799a71a81d1

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